Oxania Base 38230 (Firmenich®)
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Short profile
The main description presents a naturalistic green-fruit character, combining passion-fruit flesh with grapefruit tartness and lemon freshness. A bitter, galbanum-like accent gives the tropical fruit profile a more assertive green edge. The supplier positions this character in the opening and heart, but provides no staged blotter observations, projection measurements or specific dry-down description. A separate laboratory section instead emphasizes transparent aquatic and ozonic qualities with floral-metallic nuances; these differing descriptions should not be treated as a documented evaporation sequence.
Effect in a formula
Adds tropical fruit definition and bitter citrus freshness to fruity, citrus and green-floral compositions. It reinforces the juicy character of lemon and grapefruit accords while refreshing jasmine, rose, muguet and green-aldehydic structures. As a precompounded base, it offers a rounded, more repeatable way to introduce the forceful oxathiane character than dosing neat Oxane.
Use and dosage
The principal recommendation is 0.5–8% of the fragrance formulation for fruity, citrus or green-floral top and heart work; the page does not explicitly identify this as a concentrate-based percentage. Elsewhere it gives 0.5–5% in the finished fragrance for aquatic, muguet and transparent floral applications. These differently framed ranges are supplier formulation guidance, not IFRA limits, and should not be conflated into a single concentrate dosage.
No confirmed manufacturer use level for this exact product.
Behaviour and performance
- Tenacity
- The supplier describes moderate persistence on an hours scale. No numerical duration, blotter protocol or evaluation dilution accompanies that assessment.
Diffusion, tenacity and note impact are not combined into a single performance score.
Good areas of use
Dissolving and diluting
- Solvents
- Reported to produce clear solutions in ethanol, dipropylene glycol (DPG) and isopropyl myristate (IPM). The page supplies no quantitative solubility limits or water-miscibility data.
- Working dilution
- The page specifies a 10% working solution and a lower 1% dilution for olfactory assessment. Ethanol is the primary listed solvent, with DPG and IPM also offered as solvent options.
- Appearance
- Liquid, ranging from visually colourless to a faint yellow tint.